[tedzan]

My 4 cards of Ritchey (three 150 Series and an EPDG) do not show even a hint of the the "dove's sky". Your theory,
Jamie, of multiple plates of a given T206 Subject, I think has a lot of merit.

Another thought I might add.....American Litho. printed 1000's of Ritchey's during the 150 series press runs in 1909.
As these plates wore, they replaced them with new plates somewhere along this process as they extended Ritchey
into the 350 series press runs in 1910. These new plates included the "dove's sky".




TED Z